CVE-2024-36024: drm/amd/display: Disable idle reallow as part of command/gpint execution

Severity: medium (CVSS 4.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-05-30 · updated 2026-06-17
Weakness: CWE-362

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Disable idle reallow as part of command/gpint execution [Why] Workaroud for a race condition where DMCUB is in the process of committing to IPS1 during the handshake causing us to miss the transition into IPS2 and touch the INBOX1 RPTR causing a HW hang. [How] Disable the reallow to ensure that we have enough of a gap between entry and exit and we're not seeing back-to-back wake_and_executes.

Affected products

Linux kernel: from 4.15 before 6.8.6 — fixed in 6.8.6

How to fix

Upgrade to a fixed version: Linux kernel 6.8.6. Check the vendor advisory for mitigations.

References

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